[76] | 1 | /* Copyright (c) 2006-2010 by OpenLayers Contributors (see authors.txt for |
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| 2 | * full list of contributors). Published under the Clear BSD license. |
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| 3 | * See http://svn.openlayers.org/trunk/openlayers/license.txt for the |
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| 4 | * full text of the license. */ |
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| 5 | |
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| 6 | |
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| 7 | /** |
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| 8 | * @requires OpenLayers/Layer/SphericalMercator.js |
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| 9 | * @requires OpenLayers/Layer/EventPane.js |
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| 10 | * @requires OpenLayers/Layer/FixedZoomLevels.js |
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| 11 | */ |
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| 12 | |
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| 13 | /** |
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| 14 | * Class: OpenLayers.Layer.VirtualEarth |
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| 15 | * |
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| 16 | * Inherits from: |
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| 17 | * - <OpenLayers.Layer.EventPane> |
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| 18 | * - <OpenLayers.Layer.FixedZoomLevels> |
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| 19 | */ |
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| 20 | OpenLayers.Layer.VirtualEarth = OpenLayers.Class( |
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| 21 | OpenLayers.Layer.EventPane, |
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| 22 | OpenLayers.Layer.FixedZoomLevels, { |
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| 23 | |
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| 24 | /** |
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| 25 | * Constant: MIN_ZOOM_LEVEL |
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| 26 | * {Integer} 1 |
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| 27 | */ |
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| 28 | MIN_ZOOM_LEVEL: 1, |
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| 29 | |
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| 30 | /** |
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| 31 | * Constant: MAX_ZOOM_LEVEL |
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| 32 | * {Integer} 19 |
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| 33 | */ |
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| 34 | MAX_ZOOM_LEVEL: 19, |
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| 35 | |
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| 36 | /** |
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| 37 | * Constant: RESOLUTIONS |
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| 38 | * {Array(Float)} Hardcode these resolutions so that they are more closely |
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| 39 | * tied with the standard wms projection |
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| 40 | */ |
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| 41 | RESOLUTIONS: [ |
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| 42 | 1.40625, |
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| 43 | 0.703125, |
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| 44 | 0.3515625, |
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| 45 | 0.17578125, |
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| 46 | 0.087890625, |
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| 47 | 0.0439453125, |
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| 48 | 0.02197265625, |
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| 49 | 0.010986328125, |
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| 50 | 0.0054931640625, |
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| 51 | 0.00274658203125, |
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| 52 | 0.001373291015625, |
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| 53 | 0.0006866455078125, |
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| 54 | 0.00034332275390625, |
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| 55 | 0.000171661376953125, |
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| 56 | 0.0000858306884765625, |
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| 57 | 0.00004291534423828125, |
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| 58 | 0.00002145767211914062, |
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| 59 | 0.00001072883605957031, |
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| 60 | 0.00000536441802978515 |
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| 61 | ], |
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| 62 | |
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| 63 | /** |
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| 64 | * APIProperty: type |
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| 65 | * {VEMapType} |
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| 66 | */ |
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| 67 | type: null, |
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| 68 | |
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| 69 | /** |
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| 70 | * APIProperty: wrapDateLine |
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| 71 | * {Boolean} Allow user to pan forever east/west. Default is true. |
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| 72 | * Setting this to false only restricts panning if |
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| 73 | * <sphericalMercator> is true. |
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| 74 | */ |
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| 75 | wrapDateLine: true, |
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| 76 | |
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| 77 | /** |
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| 78 | * APIProperty: sphericalMercator |
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| 79 | * {Boolean} Should the map act as a mercator-projected map? This will |
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| 80 | * cause all interactions with the map to be in the actual map |
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| 81 | * projection, which allows support for vector drawing, overlaying |
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| 82 | * other maps, etc. |
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| 83 | */ |
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| 84 | sphericalMercator: false, |
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| 85 | |
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| 86 | /** |
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| 87 | * APIProperty: animationEnabled |
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| 88 | * {Boolean} If set to true, the transition between zoom levels will be |
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| 89 | * animated. Set to false to match the zooming experience of other |
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| 90 | * layer types. Default is true. |
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| 91 | */ |
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| 92 | animationEnabled: true, |
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| 93 | |
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| 94 | /** |
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| 95 | * Constructor: OpenLayers.Layer.VirtualEarth |
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| 96 | * |
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| 97 | * Parameters: |
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| 98 | * name - {String} |
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| 99 | * options - {Object} |
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| 100 | */ |
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| 101 | initialize: function(name, options) { |
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| 102 | OpenLayers.Layer.EventPane.prototype.initialize.apply(this, arguments); |
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| 103 | OpenLayers.Layer.FixedZoomLevels.prototype.initialize.apply(this, |
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| 104 | arguments); |
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| 105 | if(this.sphericalMercator) { |
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| 106 | OpenLayers.Util.extend(this, OpenLayers.Layer.SphericalMercator); |
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| 107 | this.initMercatorParameters(); |
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| 108 | } |
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| 109 | }, |
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| 110 | |
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| 111 | /** |
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| 112 | * Method: loadMapObject |
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| 113 | */ |
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| 114 | loadMapObject:function() { |
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| 115 | |
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| 116 | // create div and set to same size as map |
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| 117 | var veDiv = OpenLayers.Util.createDiv(this.name); |
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| 118 | var sz = this.map.getSize(); |
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| 119 | veDiv.style.width = sz.w + "px"; |
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| 120 | veDiv.style.height = sz.h + "px"; |
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| 121 | this.div.appendChild(veDiv); |
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| 122 | |
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| 123 | try { // crash prevention |
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| 124 | this.mapObject = new VEMap(this.name); |
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| 125 | } catch (e) { } |
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| 126 | |
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| 127 | if (this.mapObject != null) { |
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| 128 | try { // this is to catch a Mozilla bug without falling apart |
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| 129 | |
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| 130 | // The fourth argument is whether the map is 'fixed' -- not |
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| 131 | // draggable. See: |
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| 132 | // http://blogs.msdn.com/virtualearth/archive/2007/09/28/locking-a-virtual-earth-map.aspx |
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| 133 | // |
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| 134 | this.mapObject.LoadMap(null, null, this.type, true); |
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| 135 | this.mapObject.AttachEvent("onmousedown", OpenLayers.Function.True); |
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| 136 | |
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| 137 | } catch (e) { } |
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| 138 | this.mapObject.HideDashboard(); |
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| 139 | if(typeof this.mapObject.SetAnimationEnabled == "function") { |
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| 140 | this.mapObject.SetAnimationEnabled(this.animationEnabled); |
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| 141 | } |
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| 142 | } |
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| 143 | |
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| 144 | //can we do smooth panning? this is an unpublished method, so we need |
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| 145 | // to be careful |
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| 146 | if ( !this.mapObject || |
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| 147 | !this.mapObject.vemapcontrol || |
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| 148 | !this.mapObject.vemapcontrol.PanMap || |
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| 149 | (typeof this.mapObject.vemapcontrol.PanMap != "function")) { |
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| 150 | |
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| 151 | this.dragPanMapObject = null; |
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| 152 | } |
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| 153 | |
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| 154 | }, |
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| 155 | |
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| 156 | /** |
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| 157 | * Method: onMapResize |
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| 158 | */ |
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| 159 | onMapResize: function() { |
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| 160 | this.mapObject.Resize(this.map.size.w, this.map.size.h); |
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| 161 | }, |
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| 162 | |
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| 163 | /** |
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| 164 | * APIMethod: getWarningHTML |
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| 165 | * |
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| 166 | * Returns: |
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| 167 | * {String} String with information on why layer is broken, how to get |
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| 168 | * it working. |
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| 169 | */ |
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| 170 | getWarningHTML:function() { |
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| 171 | return OpenLayers.i18n( |
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| 172 | "getLayerWarning", {'layerType':'VE', 'layerLib':'VirtualEarth'} |
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| 173 | ); |
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| 174 | }, |
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| 175 | |
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| 176 | |
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| 177 | |
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| 178 | /************************************ |
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| 179 | * * |
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| 180 | * MapObject Interface Controls * |
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| 181 | * * |
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| 182 | ************************************/ |
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| 183 | |
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| 184 | |
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| 185 | // Get&Set Center, Zoom |
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| 186 | |
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| 187 | /** |
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| 188 | * APIMethod: setMapObjectCenter |
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| 189 | * Set the mapObject to the specified center and zoom |
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| 190 | * |
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| 191 | * Parameters: |
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| 192 | * center - {Object} MapObject LonLat format |
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| 193 | * zoom - {int} MapObject zoom format |
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| 194 | */ |
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| 195 | setMapObjectCenter: function(center, zoom) { |
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| 196 | this.mapObject.SetCenterAndZoom(center, zoom); |
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| 197 | }, |
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| 198 | |
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| 199 | /** |
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| 200 | * APIMethod: getMapObjectCenter |
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| 201 | * |
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| 202 | * Returns: |
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| 203 | * {Object} The mapObject's current center in Map Object format |
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| 204 | */ |
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| 205 | getMapObjectCenter: function() { |
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| 206 | return this.mapObject.GetCenter(); |
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| 207 | }, |
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| 208 | |
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| 209 | /** |
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| 210 | * APIMethod: dragPanMapObject |
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| 211 | * |
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| 212 | * Parameters: |
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| 213 | * dX - {Integer} |
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| 214 | * dY - {Integer} |
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| 215 | */ |
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| 216 | dragPanMapObject: function(dX, dY) { |
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| 217 | this.mapObject.vemapcontrol.PanMap(dX, -dY); |
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| 218 | }, |
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| 219 | |
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| 220 | /** |
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| 221 | * APIMethod: getMapObjectZoom |
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| 222 | * |
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| 223 | * Returns: |
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| 224 | * {Integer} The mapObject's current zoom, in Map Object format |
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| 225 | */ |
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| 226 | getMapObjectZoom: function() { |
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| 227 | return this.mapObject.GetZoomLevel(); |
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| 228 | }, |
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| 229 | |
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| 230 | |
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| 231 | // LonLat - Pixel Translation |
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| 232 | |
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| 233 | /** |
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| 234 | * APIMethod: getMapObjectLonLatFromMapObjectPixel |
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| 235 | * |
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| 236 | * Parameters: |
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| 237 | * moPixel - {Object} MapObject Pixel format |
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| 238 | * |
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| 239 | * Returns: |
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| 240 | * {Object} MapObject LonLat translated from MapObject Pixel |
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| 241 | */ |
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| 242 | getMapObjectLonLatFromMapObjectPixel: function(moPixel) { |
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| 243 | //the conditional here is to test if we are running the v6 of VE |
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| 244 | return (typeof VEPixel != 'undefined') |
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| 245 | ? this.mapObject.PixelToLatLong(moPixel) |
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| 246 | : this.mapObject.PixelToLatLong(moPixel.x, moPixel.y); |
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| 247 | }, |
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| 248 | |
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| 249 | /** |
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| 250 | * APIMethod: getMapObjectPixelFromMapObjectLonLat |
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| 251 | * |
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| 252 | * Parameters: |
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| 253 | * moLonLat - {Object} MapObject LonLat format |
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| 254 | * |
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| 255 | * Returns: |
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| 256 | * {Object} MapObject Pixel transtlated from MapObject LonLat |
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| 257 | */ |
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| 258 | getMapObjectPixelFromMapObjectLonLat: function(moLonLat) { |
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| 259 | return this.mapObject.LatLongToPixel(moLonLat); |
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| 260 | }, |
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| 261 | |
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| 262 | |
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| 263 | /************************************ |
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| 264 | * * |
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| 265 | * MapObject Primitives * |
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| 266 | * * |
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| 267 | ************************************/ |
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| 268 | |
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| 269 | |
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| 270 | // LonLat |
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| 271 | |
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| 272 | /** |
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| 273 | * APIMethod: getLongitudeFromMapObjectLonLat |
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| 274 | * |
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| 275 | * Parameters: |
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| 276 | * moLonLat - {Object} MapObject LonLat format |
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| 277 | * |
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| 278 | * Returns: |
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| 279 | * {Float} Longitude of the given MapObject LonLat |
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| 280 | */ |
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| 281 | getLongitudeFromMapObjectLonLat: function(moLonLat) { |
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| 282 | return this.sphericalMercator ? |
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| 283 | this.forwardMercator(moLonLat.Longitude, moLonLat.Latitude).lon : |
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| 284 | moLonLat.Longitude; |
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| 285 | }, |
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| 286 | |
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| 287 | /** |
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| 288 | * APIMethod: getLatitudeFromMapObjectLonLat |
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| 289 | * |
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| 290 | * Parameters: |
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| 291 | * moLonLat - {Object} MapObject LonLat format |
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| 292 | * |
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| 293 | * Returns: |
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| 294 | * {Float} Latitude of the given MapObject LonLat |
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| 295 | */ |
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| 296 | getLatitudeFromMapObjectLonLat: function(moLonLat) { |
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| 297 | return this.sphericalMercator ? |
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| 298 | this.forwardMercator(moLonLat.Longitude, moLonLat.Latitude).lat : |
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| 299 | moLonLat.Latitude; |
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| 300 | }, |
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| 301 | |
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| 302 | /** |
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| 303 | * APIMethod: getMapObjectLonLatFromLonLat |
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| 304 | * |
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| 305 | * Parameters: |
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| 306 | * lon - {Float} |
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| 307 | * lat - {Float} |
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| 308 | * |
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| 309 | * Returns: |
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| 310 | * {Object} MapObject LonLat built from lon and lat params |
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| 311 | */ |
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| 312 | getMapObjectLonLatFromLonLat: function(lon, lat) { |
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| 313 | var veLatLong; |
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| 314 | if(this.sphericalMercator) { |
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| 315 | var lonlat = this.inverseMercator(lon, lat); |
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| 316 | veLatLong = new VELatLong(lonlat.lat, lonlat.lon); |
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| 317 | } else { |
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| 318 | veLatLong = new VELatLong(lat, lon); |
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| 319 | } |
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| 320 | return veLatLong; |
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| 321 | }, |
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| 322 | |
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| 323 | // Pixel |
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| 324 | |
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| 325 | /** |
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| 326 | * APIMethod: getXFromMapObjectPixel |
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| 327 | * |
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| 328 | * Parameters: |
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| 329 | * moPixel - {Object} MapObject Pixel format |
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| 330 | * |
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| 331 | * Returns: |
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| 332 | * {Integer} X value of the MapObject Pixel |
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| 333 | */ |
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| 334 | getXFromMapObjectPixel: function(moPixel) { |
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| 335 | return moPixel.x; |
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| 336 | }, |
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| 337 | |
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| 338 | /** |
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| 339 | * APIMethod: getYFromMapObjectPixel |
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| 340 | * |
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| 341 | * Parameters: |
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| 342 | * moPixel - {Object} MapObject Pixel format |
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| 343 | * |
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| 344 | * Returns: |
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| 345 | * {Integer} Y value of the MapObject Pixel |
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| 346 | */ |
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| 347 | getYFromMapObjectPixel: function(moPixel) { |
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| 348 | return moPixel.y; |
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| 349 | }, |
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| 350 | |
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| 351 | /** |
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| 352 | * APIMethod: getMapObjectPixelFromXY |
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| 353 | * |
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| 354 | * Parameters: |
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| 355 | * x - {Integer} |
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| 356 | * y - {Integer} |
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| 357 | * |
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| 358 | * Returns: |
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| 359 | * {Object} MapObject Pixel from x and y parameters |
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| 360 | */ |
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| 361 | getMapObjectPixelFromXY: function(x, y) { |
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| 362 | //the conditional here is to test if we are running the v6 of VE |
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| 363 | return (typeof VEPixel != 'undefined') ? new VEPixel(x, y) |
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| 364 | : new Msn.VE.Pixel(x, y); |
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| 365 | }, |
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| 366 | |
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| 367 | CLASS_NAME: "OpenLayers.Layer.VirtualEarth" |
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| 368 | }); |
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